byCarnegie Institution of Washington. Dept. of Terrestrial Magnetism; Fisk, H. W.; Sverdrup, H. U.
Magnetic results, 1918-1926, by H. W. Fisk. Magnetic, atmospheric-electric, and auroral results, Maud Expedition, 1918-1925, by H. U. Sverdrup.Carnegie Institution of Washington publication 175, vol. VI"Researches of the Department of Terrestrial Magnetism, vol. VI" Topics: Geomagnetism--Observations, Atmospheric electricity, Auroras, Maud Expedition (1918-1925)